EP0765772A4 - Circuit de commande mobile pour dispositif mobile a entrainement hydraulique - Google Patents

Circuit de commande mobile pour dispositif mobile a entrainement hydraulique

Info

Publication number
EP0765772A4
EP0765772A4 EP95921998A EP95921998A EP0765772A4 EP 0765772 A4 EP0765772 A4 EP 0765772A4 EP 95921998 A EP95921998 A EP 95921998A EP 95921998 A EP95921998 A EP 95921998A EP 0765772 A4 EP0765772 A4 EP 0765772A4
Authority
EP
European Patent Office
Prior art keywords
hand
circuits
running
pressure
cut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP95921998A
Other languages
German (de)
English (en)
Other versions
EP0765772A1 (fr
Inventor
Naoki Ishizaki
Toshiro Takano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0765772A1 publication Critical patent/EP0765772A1/fr
Publication of EP0765772A4 publication Critical patent/EP0765772A4/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/001—Steering non-deflectable wheels; Steering endless tracks or the like control systems
    • B62D11/005—Hydraulic control systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/022—Flow-dividers; Priority valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/452—Selectively controlling multiple pumps or motors, e.g. switching between series or parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/3054—In combination with a pressure compensating valve the pressure compensating valve is arranged between directional control valve and output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • F15B2211/41545—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve being connected to multiple output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Motor Power Transmission Devices (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

La présente invention concerne un circuit de commande mobile pour dispositif mobile à entraînement hydraulique. Ce circuit se compose: d'une pompe hydraulique, de soupapes de commande directionnelle de droite et de gauche montées en parallèle le long d'un canal de décharge de la pompe hydraulique, d'ensembles de premiers circuits de gauche et de droite et de seconds circuits de gauche et de droite (constitués par les connexions respectives entre d'une part les extrémités sortie des soupapes de commande directionnelle de droite et de gauche et d'autre part les moteurs hydrauliques mobiles de droite et de gauche) et de soupapes de compensation de pression (disposées chacunes le long du premier circuit et du second circuit) permettant de commander la section d'une ouverture située entre un orifice d'admission et un orifice d'évacuation dudit canal de décharge, cette ouverture étant fonction de la différence de pression entre, d'une part, sa propre pression de charge et, d'autre part, les pressions de charge les plus élevées des moteurs hydrauliques mobiles de gauche et de droite assurant la compensation de pression. Selon la présente invention, les soupapes de compensation de pression sont construites de façon à ce que leur fonctionnement établisse par des liaisons distinctes les communications d'une part entre le premier circuit de gauche et le premier circuit de droite et d'autre part entre le second circuit de gauche et le second circuit de droite, dans le cas de l'opération de compensation de niveau de liquide hydraulique. Les soupapes de compensation de pression sont construites également de façon à ce que leur fonctionnement coupe les communications d'une part entre le premier circuit de gauche et le premier circuit de droite et d'autre part entre le second circuit de gauche et le second circuit de droite, dans le cas où la communication entre les orifices d'admission et d'évacuation est coupée, du moins en majeure partie.
EP95921998A 1994-06-21 1995-06-20 Circuit de commande mobile pour dispositif mobile a entrainement hydraulique Ceased EP0765772A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP138619/94 1994-06-21
JP6138619A JPH082269A (ja) 1994-06-21 1994-06-21 油圧駆動式走行装置の走行制御回路
PCT/JP1995/001227 WO1995035220A1 (fr) 1994-06-21 1995-06-20 Circuit de commande mobile pour dispositif mobile a entrainement hydraulique

Publications (2)

Publication Number Publication Date
EP0765772A1 EP0765772A1 (fr) 1997-04-02
EP0765772A4 true EP0765772A4 (fr) 1997-09-17

Family

ID=15226311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95921998A Ceased EP0765772A4 (fr) 1994-06-21 1995-06-20 Circuit de commande mobile pour dispositif mobile a entrainement hydraulique

Country Status (5)

Country Link
US (1) US5857330A (fr)
EP (1) EP0765772A4 (fr)
JP (1) JPH082269A (fr)
KR (1) KR960001360A (fr)
WO (1) WO1995035220A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1037248A (ja) * 1996-07-26 1998-02-10 Komatsu Ltd 油圧式走行装置
EP1255930B1 (fr) * 2000-02-17 2005-06-01 Bosch Rexroth AG Circuit de commande hydraulique d'un moteur hydraulique a au moins deux vitesses
US7055318B2 (en) * 2001-11-28 2006-06-06 Bosch Rexroth Ag Drive mechanism
US7204084B2 (en) * 2004-10-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7204185B2 (en) * 2005-04-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7243493B2 (en) * 2005-04-29 2007-07-17 Caterpillar Inc Valve gradually communicating a pressure signal
US7194856B2 (en) * 2005-05-31 2007-03-27 Caterpillar Inc Hydraulic system having IMV ride control configuration
US7302797B2 (en) * 2005-05-31 2007-12-04 Caterpillar Inc. Hydraulic system having a post-pressure compensator
US7210396B2 (en) * 2005-08-31 2007-05-01 Caterpillar Inc Valve having a hysteretic filtered actuation command
US7331175B2 (en) * 2005-08-31 2008-02-19 Caterpillar Inc. Hydraulic system having area controlled bypass
US7614336B2 (en) * 2005-09-30 2009-11-10 Caterpillar Inc. Hydraulic system having augmented pressure compensation
US20100043418A1 (en) * 2005-09-30 2010-02-25 Caterpillar Inc. Hydraulic system and method for control
US7320216B2 (en) * 2005-10-31 2008-01-22 Caterpillar Inc. Hydraulic system having pressure compensated bypass
US7631951B2 (en) * 2006-10-17 2009-12-15 Deere & Company Hydraulic system for limited wheel slip of traction drive system
US8479504B2 (en) * 2007-05-31 2013-07-09 Caterpillar Inc. Hydraulic system having an external pressure compensator
US20080295681A1 (en) * 2007-05-31 2008-12-04 Caterpillar Inc. Hydraulic system having an external pressure compensator
US7621211B2 (en) * 2007-05-31 2009-11-24 Caterpillar Inc. Force feedback poppet valve having an integrated pressure compensator
US8631650B2 (en) 2009-09-25 2014-01-21 Caterpillar Inc. Hydraulic system and method for control
DE102010009704A1 (de) * 2010-03-01 2011-09-01 Robert Bosch Gmbh Hydraulischer Fahrantrieb und Verfahren zum Steuern eines derartigen Fahrantriebs
DE102014117355A1 (de) 2014-11-26 2016-06-02 Linde Hydraulics Gmbh & Co. Kg Hydrostatischer Fahrantrieb
DE112015000152B3 (de) * 2015-10-28 2018-06-28 Komatsu Ltd. Antriebsvorrichtung einer Baumaschine
JP7049213B2 (ja) * 2018-08-10 2022-04-06 川崎重工業株式会社 建設機械の油圧回路
US10605361B2 (en) * 2018-08-31 2020-03-31 Cnh Industrial America Llc System for controlling the torsional output of a hydrostatic transmission of a work vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003343A1 (fr) * 1992-08-04 1994-02-17 Kabushiki Kaisha Komatsu Seisakusho Dispositif de compensation d'avancement lineaire pour circuits hydrauliques de vehicules a entrainement hydraulique

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US4769991A (en) * 1987-02-19 1988-09-13 Deere & Company Balanced hydraulic propulsion system
JPH057289Y2 (fr) * 1987-04-27 1993-02-24
JPH01176113A (ja) * 1987-12-29 1989-07-12 Sony Corp ディジタル信号処理装置
JPH0519226Y2 (fr) * 1988-05-30 1993-05-20
DE4005967C2 (de) * 1990-02-26 1996-05-09 Rexroth Mannesmann Gmbh Steueranordnung für mehrere hydraulische Verbraucher
EP0491050B1 (fr) * 1990-07-05 1995-04-26 Hitachi Construction Machinery Co., Ltd. Systeme de commande hydraulique et agencement de soupapes associees
JPH04210101A (ja) * 1990-11-30 1992-07-31 Komatsu Ltd 油圧回路
JPH057289A (ja) * 1991-06-25 1993-01-14 Fujitsu Ltd フアクシミリ装置の転送方式
JPH0582754A (ja) * 1991-09-18 1993-04-02 Sony Corp ２層ゲート構造の半導体装置およびスタテイツクｒａｍ
JP3119317B2 (ja) * 1992-05-29 2000-12-18 株式会社小松製作所 圧油供給装置
JPH06138619A (ja) * 1992-10-27 1994-05-20 Fuji Photo Film Co Ltd 熱現像感光材料
US5447093A (en) * 1993-03-30 1995-09-05 Caterpillar Inc. Flow force compensation
US5699665A (en) * 1996-04-10 1997-12-23 Commercial Intertech Corp. Control system with induced load isolation and relief

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
WO1994003343A1 (fr) * 1992-08-04 1994-02-17 Kabushiki Kaisha Komatsu Seisakusho Dispositif de compensation d'avancement lineaire pour circuits hydrauliques de vehicules a entrainement hydraulique
US5560204A (en) * 1992-08-04 1996-10-01 Kabushiki Kaisha Komatsu Seisakusho Compensation system for hydraulic circuit of hydraulically driven vehicle for straight traveling

Non-Patent Citations (1)

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Title
See also references of WO9535220A1 *

Also Published As

Publication number Publication date
US5857330A (en) 1999-01-12
EP0765772A1 (fr) 1997-04-02
WO1995035220A1 (fr) 1995-12-28
JPH082269A (ja) 1996-01-09
KR960001360A (ko) 1996-01-25

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